Seagate ST9250612NS-20PK User manual

Product Manual

Constellation.2

TM

Serial ATA

100545983

Rev. F

February 2012

Standard Models

ST91000640NS

ST9500620NS

ST9250610NS

Self-Encrypting Drive Models

ST91000641NS

ST9500621NS

ST9250611NS

SED FIPS 140-2 Models

ST91000642NS

ST9500622NS

ST9250612NS

Revision history

Publication number: 100545983, Rev. F February 2012

Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC

in the United States and/or other countries. Momentus and SeaTools are either trademarks or registered

trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or

other countries. The FIPS logo is a certification mark of NIST, which does not imply product endorsement

by NIST, the U.S., or Canadian governments. All other trademarks or registered trademarks are the

property of their respective owners.

No part of this publication may be reproduced in any form without written permission of Seagate

Technology LLC. Call 877-PUB-TEK1(877-782-8351) to request permission.

One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes. Your

computer's operating system may use a different standard of measurement and report a lower capacity.

In addition, some of the listed capacity is used for formatting and other functions, and thus will not be

available for data storage. Seagate reserves the right to change, without notice, product offerings or

specifications.

Revision Date Sheets affected or comments

Rev. A 06/16/10 Initial release.

Rev. B 10/12/10 fc, 2, 15-19, 23-24 & 31.

Rev. C 02/14/11 5, 8, 10-12, 14 & 27.

Rev. D 03/15/11 13, 25, 29-30 & 33-34.

Rev. E 04/28/11 fc, 2 & 5.

Rev. F 02/27/12 fc, 2, 5, 28-31 & 35.

Constellation.2 Serial ATA Product Manual, Rev. F i

Contents

1.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1 About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1 Specification summary tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.4 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.5 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.6 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.7 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.8 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.8.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.8.3 Voltage tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.8.4 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.9 Environmental limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.9.1 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.9.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.9.3 Effective altitude (sea level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.9.4 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.9.5 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.10 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.11 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.12.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF) . . . 20

3.13 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.13.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.13.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.13.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.14 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.14.1 European Union Restriction of Hazardous Substances (RoHS) Directive. . . . . 22

3.14.2 China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . 22

3.15 Corrosive environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.16 Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.17 Product warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.1 Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.3 Serial ATA cables and connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.4 Drive mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.4.1 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.5 Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.0 About FIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.0 About self-encrypting drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.1 Data encryption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.2 Controlled access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.2.1 Admin SP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.2.2 Locking SP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.2.3 Default password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

ii Constellation.2 Serial ATA Product Manual, Rev. F

6.3 Random number generator (RNG). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.4 Drive locking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.5 Data bands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.6 Cryptographic erase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.7 Authenticated firmware download . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.8 Power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.9 Supported commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.10 RevertSP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.11 ATA Security Erase Unit Command on SED drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.12 Sanitize Device - CRYPTO SCRAMBLE EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

7.0 Serial ATA (SATA) interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.1 Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.2 Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

7.3.1 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

7.3.3 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Constellation.2 Serial ATA Product Manual, Rev. F iii

List of Figures

Figure 1. Typical 5V/12V startup and operation current profile for 1TB models . . . . . . . . . . . . . . . . . . 13

Figure 2. Typical 5V/12V startup and operation current profile for 500GB models . . . . . . . . . . . . . . . . 13

Figure 3. Typical 5V/12V startup and operation current profile for 250GB models . . . . . . . . . . . . . . . . 14

Figure 4. Location of the HDA temperature check point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 5. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 6. Mounting dimensions—top, side and end view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 7. Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 8. Example of FIPS tamper evidence labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Constellation.2 Serial ATA Product Manual, Rev. F 1

1.0 Seagate Technology support services

SEAGATE ONLINE SUPPORT and SERVICES

For information regarding products and services, visit http://www.seagate.com/www/en-us/about/contact_us/

Available services include:

Presales & Technical support

Global Support Services telephone numbers & business hours

Authorized Service Centers

For information regarding Warranty Support, visit

http://www.seagate.com/www/en-us/support/warranty_&_returns_assistance

For information regarding Data Recovery Services, visit http://www.i365.com

For Seagate OEM & Distribution partner portal, visit https://direct.seagate.com/portal/system

For Seagate reseller portal, visit http://spp.seagate.com

2 Constellation.2 Serial ATA Product Manual, Rev. F

2.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate

Constellation.2

TM

Serial ATA model drives:

.

Note. Previous generations of Seagate Self-Encrypting Drive models were called Full Disk Encryption

(FDE) models before a differentiation between drive-based encryption and other forms of

encryption was necessary.

Note. The Self-Encrypting Drive models indicated on the cover of this product manual have provisions

for “Security of Data at Rest” based on the standards defined by the Trusted Computing Group

(see www.trustedcomputinggroup.org).

For more information on FIPS 140-2 Level 2 certification see See Section 5.0 on page 28.

Model Number Self-Encrypting Drive (SED) FIPS 140-2 Level 2

ST91000640NS No No

ST91000641NS Yes No

ST91000642NS Yes Yes

ST9500620NS No No

ST9500621NS Yes No

ST9500622NS Yes Yes

ST9250610NS No No

ST9250611NS Yes No

ST9250612NS Yes Yes

Constellation.2 Serial ATA Product Manual, Rev. F 3

These drives provide the following key features:

• 7200 RPM spindle speed.

• High instantaneous (burst) data-transfer rates (up to 600MB/s).

• Perpendicular recording technology provides the drives with increased areal density.

• State-of-the-art cache and on-the-fly error-correction algorithms.

• Native Command Queueing with command ordering to increase performance in demanding applications.

• Full-track multiple-sector transfer capability without local processor intervention.

• Quiet operation.

• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.

• Support for S.M.A.R.T. drive monitoring and reporting.

• Supports latching SATA cables and connectors.

• Worldwide Name (WWN) capability uniquely identifies the drive.

Constellation.2 Serial ATA Self-Encrypting Drive models have the following additional features:

• Automatic data encryption/decryption

• Controlled access

• Random number generator

• Drive locking

• 16 independent data bands

• Cryptographic erase of user data for a drive that will be repurposed or scrapped

• Authenticated firmware download

Note. There is no significant performance difference between Self-Encrypting Drive and standard (non-

Self-Encrypting Drive) models.

4 Constellation.2 Serial ATA Product Manual, Rev. F

2.1 About the Serial ATA interface

The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary

advantages include:

• Easy installation and configuration with true plug-and-play connectivity. It is not necessary to set any jump-

ers or other configuration options.

• Thinner and more flexible cabling for improved enclosure airflow and ease of installation.

• Scalability to higher performance levels.

In addition, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial

ATA was designed to allow you to install a Serial ATA host adapter and Serial ATA disc drive in your current

system and expect all of your existing applications to work as normal.

The Serial ATA interface connects each disc drive in a point-to-point configuration with the Serial ATA host

adapter. There is no master/slave relationship with Serial ATA devices like there is with parallel ATA. If two

drives are attached on one Serial ATA host adapter, the host operating system views the two devices as if they

were both “masters” on two separate ports. This essentially means both drives behave as if they are Device 0

(master) devices.

Note. The host adapter may, optionally, emulate a master/slave environment to host software where two

devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and

Device 1 (slave) accessed at the same set of host bus addresses. A host adapter that emulates a

master/slave environment manages two sets of shadow registers. This is not a typical Serial ATA

environment.

The Serial ATA host adapter and drive share the function of emulating parallel ATA device behavior to provide

backward compatibility with existing host systems and software. The Command and Control Block registers,

PIO and DMA data transfers, resets, and interrupts are all emulated.

The Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device regis-

ters, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For addi-

tional information about how Serial ATA emulates parallel ATA, refer to the “Serial ATA: High Speed Serialized

AT Attachment” specification. The specification can be downloaded from www.serialata.org.

Constellation.2 Serial ATA Product Manual, Rev. F 5

3.0 Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal

power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the

following drive models:

Unless otherwise stated, the information in this manual applies to standard and Self-Encrypting Drive models

Product data communicated in this manual is specific only to the model numbers listed in this manual. The data

listed in this manual may not be predictive of future generation specifications or requirements. If you are

designing a system which will use one of the models listed or future generation products and need further

assistance, please contact your Field Applications Engineer (FAE) or our global support services group as

shown in Section 1.0.

3.1 Specification summary tables

The specifications listed in the following tables are for quick reference. For details on specification measure-

ment or definition, see the appropriate section of this manual.

Model Number Self-Encrypting Drive (SED) FIPS 140-2 Level 2

ST91000640NS No No

ST91000641NS Yes No

ST91000642NS Yes Yes

ST9500620NS No No

ST9500621NS Yes No

ST9500622NS Yes Yes

ST9250610NS No No

ST9250611NS Yes No

ST9250612NS Yes Yes

6 Constellation.2 Serial ATA Product Manual, Rev. F

Table 1: Drive specifications summary for 1TB, 500 and 250 GB models

Drive specification ST91000640NS

ST91000641NS

ST91000642NS

ST9500620NS

ST9500621NS

ST9500622NS

ST9250610NS

ST9250611NS

ST9250612NS

Formatted GB (512 bytes/sector)* 1000 500 250

Guaranteed sectors 1,953,525,168 976,773,168 488,397,168

Heads 8 4 2

Discs 4 2 1

Bytes per sector 512

Default sectors per track 63

Default read/write heads 16

Default cylinders 16,383

Recording density, KBPI (Kb/in max) 1544

Track density, KTPI (Ktracks/in avg.) 270

Areal density, (Gb/in

2

avg) 417

Spindle speed (RPM) 7200

Internal data transfer rate (Mb/s max) 1304

Sustained data transfer rate OD (MB/s max) 115

I/O data-transfer rate (MB/s max) 600

ATA data-transfer modes supported PIO modes 0–4

Multiword DMA modes 0–2

Ultra DMA modes 0–6

Cache buffer 64 Mbytes

Weight: (maximum) 200 g (0.441 lb) 183 g (0.403 lb) 179 g (0.395 lb)

Average latency 4.16 ms

Power-on to ready (sec max) 20 sec

Standby to ready (sec max) 13 sec

Track-to-track seek time (ms typical) 0.23 read

0.44 write

Average seek, read (ms typical) 7.5

Average seek, write (ms typical) 8.5

Startup current (typical) 12V (peak) 2.0 amps

Voltage tolerance (including noise) 5V ±5%

12V ±5%

Ambient temperature 5° to 60°C (operating)

–40° to 70°C (nonoperating)

Temperature gradient (°C per hour max) 20°C (operating)

20°C (nonoperating)

Relative humidity 5% to 95% (operating)

5% to 95% (nonoperating)

Relative humidity gradient 20% per hour max

Wet bulb temperature (°C max) 28°C

Altitude, operating –60.96 m to 3,048 m

(–200 ft. to 10,000+ ft.)

Altitude, nonoperating

(below mean sea level, max)

–60.96 m to 12,192 m

(–200 ft. to 40,000+ ft.)

Operational Shock (max at 2 ms) Read 70 Gs / Write 40 Gs

Non-Operational Shock (max at 2 ms) 400 Gs

Vibration, operating 5–500 Hz: 0.5 Gs

Vibration, nonoperating 5–500 Hz: 3.0 Gs

Constellation.2 Serial ATA Product Manual, Rev. F 7

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment

and formatting.

**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and

power to operational levels.

3.2 Formatted capacity

Model

Formatted

capacity*

Guaranteed

sectors

Bytes per sector

ST91000640NS

ST91000641NS

ST91000642NS

1000 GB 1,953,525,168

512

ST9500620NS

ST9500621NS

ST9500622NS

500 GB 976,773,168

ST9250610NS

ST9250611NS

ST9250612NS

250 GB 488,397,168

*One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment

and formatting.

3.2.1 LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,

where n is the number of guaranteed sectors as defined above.

See Section 7.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-

bit addressing support of drives with capacities over 137 Gbytes.

3.3 Default logical geometry

Cylinders Read/write heads Sectors per track

16,383 16 63

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,

where n is the number of guaranteed sectors as defined above.

Drive acoustics, sound power (bels)

Active 2.8 (typical)

Idle** 2.2 (typical)

Nonrecoverable read errors 1 sector per 10

15

bits read

Annualized Failure Rate (AFR) 0.62%

Warranty To determine the warranty for a specific drive, use a web browser to access the

following web page:

http://www.seagate.com/www/en-us/support/warranty_&_returns_assistance

From this page, click on the “Verify Your Warranty” link. You will be asked to provide

the drive serial number, model number (or part number) and country of purchase.

The system will display the warranty information for your drive.

Load/Unload cycles 300,000 (25°C, 50% rel. humidity) (600,000 design life testing)

Supports Hotplug operation per

Serial ATA Revision 2.6 specification

Yes

Drive specification ST91000640NS

ST91000641NS

ST91000642NS

ST9500620NS

ST9500621NS

ST9500622NS

ST9250610NS

ST9250611NS

ST9250612NS

8 Constellation.2 Serial ATA Product Manual, Rev. F

3.4 Recording and interface technology

All models

Interface Serial ATA (SATA)

Recording method Perpendicular

Recording density, KBPI (Kb/in max) 1544

Track density, KTPI (Ktracks/in avg) 270

Areal density (Gb/in

2

avg) 417

Spindle speed (RPM) (± 0.2%) 7200

Internal data transfer rate (Mb/s max) 1304

Sustained data transfer rate (MB/s max) 115

I/O data-transfer rate (MB/s max) 600

3.5 Physical characteristics

Weight: (maximum)

1TB models

500GB models

250GB models

200 g (0.441 lb)

183 g (0.403 lb)

179 g (0.395 lb)

Cache buffer 64 Mbytes (65,536 KB)

Note. Refer to Figure 6, page 26 for detailed mounting configuration dimensions.

3.6 Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using

drive diagnostics. The specifications in the table below are defined as follows:

• Track-to-track seek time is an average of all possible single-track seeks in both directions.

• Average seek time is a true statistical random average of at least 5,000 measurements of seeks between

random tracks, less overhead.

*Typical seek times (ms) Read Write

Track-to-track 0.23 0.44

Average 7.5 8.5

Full Stroke 17.06 18.08

Average latency: 4.16

*Measured in performance mode.

Note. These drives are designed to consistently meet the seek times represented in this manual. Physical

seeks, regardless of mode (such as track-to-track and average), are expected to meet the noted

values. However, due to the manner in which these drives are formatted, benchmark tests that

include command overhead or measure logical seeks may produce results that vary from these

specifications.

Constellation.2 Serial ATA Product Manual, Rev. F 9

3.7 Start/stop times

Power-on to Ready (sec) 20 (max)

Standby to Ready (sec) 13 (max)

Ready to spindle stop (sec) 20 (max)

3.8 Power specifications

The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 5, page 25 on

page 25.

3.8.1 Power consumption

Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on

an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient

temperature.

• Spinup power

Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating

speed.

• Standby mode

During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/

write electronics are in power-down mode.

The standard drive models and the SED drive models have identical hardware, however the security and

encryption portion of the drive controller ASIC is enabled and functional in the SED models. This represents a

small additional drain on the 5V supply of about 30mA and a commensurate increase of about 150mW in

power consumption. There is no additional drain on the 12V supply.

10 Constellation.2 Serial ATA Product Manual, Rev. F

Table 2: 1000GB drive (Standard & SED model) DC power requirementss

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and

power to operational levels.

Constellation.2 Serial ATA Product Manual, Rev. F 11

500GB drive (Standard & SED model) DC power requirements

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and

power to operational levels.

12 Constellation.2 Serial ATA Product Manual, Rev. F

250GB drive (Standard & SED model) DC power requirements

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and

power to operational levels.

Constellation.2 Serial ATA Product Manual, Rev. F 13

3.8.1.1 Typical current profiles

Figure 1. Typical 5V/12V startup and operation current profile for 1TB models

Figure 2. Typical 5V/12V startup and operation current profile for 500GB models

14 Constellation.2 Serial ATA Product Manual, Rev. F

Figure 3. Typical 5V/12V startup and operation current profile for 250GB models

3.8.2 Conducted noise

Noise is specified as a periodic and random distribution of frequencies covering a defined frequency. Maximum

allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.

• +5v = 250 mV pp from 100 Hz to 20 MHz.

• +12v = 450 mV pp from 100 Hz to 100 KHz.

= 250 mV pp from 100 KHz to 20 MHz

= 150 mV pp from 20 MHz to 80 MHz

Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write

current.

3.8.3 Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

12V ± 5%

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Seagate ST9250612NS-20PK User manual

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